Dish DVR works much in the same way as TiVo, only the wording has changed. When first setting up the DVR you are presented with a bunch of choices: HD or SD, which episodes, stop time and others - as the default. After setting the default, your ViP unit will use these rules to record episodes. As for TiV-esque "wish list" you the user needs to choose "All episodes," "New episodes," or "Every episode."
If that needs further explanation, "All episodes" will record every episode of a series once, including past episodes until the unit has recorded every episode in existence that has been aired during the DVR's life time. "Every episode" and "New episodes" will record just that.
Another TiVo user error you may encounter is searching "Title" vs. "Description."
Your "radio freq" question has do with "single mode" vs "dual mode." If you turn off "single mode" each TV will command one of the three tuners exclusively and you will loose PiP capability. Regardless of single vs. dual mode, DVR functionality remains supreme and will override all user input.